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漏斗过滤的注意事项

更新时间: 2020-10-20 00:00:00     

1、注意事项为一贴,二低,三靠;

2、一贴是漏纸要贴紧漏斗,可用一点点水使漏纸贴紧;

3、二低,一是漏纸要低于漏斗口,二为液体表面要低于漏纸;

4、三靠,烧杯要靠玻璃棒 ,玻璃棒要靠漏纸 ,漏斗的下面要靠盛载液体的烧杯;

5、过滤必须用到玻璃棒引流,不可直接将滤液倒入漏斗,滤纸要完好,无破损,否则会影响过滤效果,承接滤液的烧杯要洁净,否则会使得到的滤液受到污染。

关键词: 漏斗 过滤 注意 事项

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